Table 3. Median (IQR) of competitive singles game characteristics of junior and professional tennis players for four Grand Slams* |
| Game Characteristic |
Junior Boys |
Professional Men |
Junior Girls |
Professional Women |
| Sample Size (matches) |
246 |
1,089 |
250 |
1,126 |
| Points Per Matcha |
| Clay |
131 (112-158) |
213 (174-258) |
122 (104-150) |
133 (108-170) |
| Grass |
137 (118-162) |
221 (180-275) |
115 (100-177) |
130 (111-169) |
| Hard |
130 (104-167) |
216 (177-265) |
122 (105-175) |
129 (108-171) |
| Serve Percentage Won Per Matcha,b |
| Clay |
58.3 (52.4-65.4) |
62.7 (56.5-68.3) |
52.8 (46.8-59.1) |
56.1 (49.4-62.0) |
| Grass |
63.6 (58.0-67.8) |
66.4 (61.2-71.8) |
57.2 (49.6-64.1) |
59.0 (52.7-64.7) |
| Hard |
58.7 (52.5-65.9) |
63.8 (58.4-69.2) |
55.0 (50.0-62.1) |
57.1 (50.5-63.6) |
| Point Spread Per Matcha,b |
| Clay |
4.0 (3.1-4.7) |
3.6 (2.9-4.4) |
4.0 (2.9-5.0) |
3.9 (3.0-4.9) |
| Grass |
3.2 (2.3-4.0) |
3.4 (2.8-4.1) |
3.9 (3.0-4.9) |
3.6 (3.0-4.8) |
| Hard |
3.8 (3.0-4.9) |
3.6 (2.9-4.3) |
3.5 (2.8-4.5) |
3.8 (2.9-4.7) |
| Break Point Chances Per Matcha,b |
| Clay |
6 (4-8) |
5 (3-8) |
8 (6-10) |
7 (5-9) |
| Grass |
5 (3-8) |
4 (2-6) |
7 (4-10) |
6 (4-8) |
| Hard |
6 (4-8) |
5 (3-7) |
7 (4.5-9) |
7 (5-9) |
| Tiebreaks Per Matcha, Mean |
| Clay |
11.6 |
14.1 |
5.7 |
9.2 |
| Grass |
18.2 |
20.2 |
10.5 |
12.1 |
| Hard |
9.3 |
17.1 |
7.3 |
9.0 |
|
b Indicates a difference between junior girls and professional women at the 5% level or less |
a Indicates a difference between junior boys and professional men at the 5% level or less |
*The data include the 2017 Australian Open for juniors and the 2016 Majors for all other junior Grand Slams; the professional data included matches from the 2016-2016 Grand Slams |
|